Consolidated Statements of Financial Position (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Other assets, net of accumulated amortization	$ 1,085	$ 1,046
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, par value (in dollars per share)	$ 5.00	$ 5.00
Common stock, shares authorized (in shares)	1,200,000,000	1,200,000,000
Common stock, shares, issued (in shares)	1,012,261,159	1,012,261,159
Mandatory convertible preferred stock
Preferred stock, dividend rate, percentage	6.00%
Preferred stock, par value (in dollars per share)	$ 1.00
Preferred stock, shares authorized (in shares)	20,000,000
Preferred stock, shares, issued (in shares)	5,750,000
Preferred stock, liquidation preference, value	$ 5,750